CaO/SiO_2比对伟晶岩多孔微晶玻璃性能的影响  

Influence of CaO/SiO_2 ratio on properties of pegmatite porous glass-ceramic

作　　者：杨梅[1,2] 陈立佳[1] 吴玉胜[1] 陈皓[3] 

机构地区：[1]沈阳工业大学材料科学与工程学院,沈阳110870 [2]辽东学院化工与材料学院,辽宁丹东118003 [3]沈阳师范大学物理科学与技术学院,沈阳110034

出　　处：《沈阳工业大学学报》2012年第6期644-649,共6页Journal of Shenyang University of Technology

基　　金：国家自然科学基金资助项目(50804031)

摘　　要：为了研究CaO与SiO2质量比对伟晶岩多孔微晶玻璃性能的影响,以CAS多孔微晶玻璃为研究对象,通过DTA、XRD、SEM和三点弯曲法等分析手段进行研究.实验结果表明:随着CaO与SiO2质量比例的增加,副硅灰石晶体的长径比逐渐减小,当CaO与SiO2质量比为18∶60时,副硅灰石晶体体积分数为最大;随着CaO/SiO2质量比的增加,主晶相没有发生改变,均为副硅灰石晶体;样品的抗压强度、抗折强度均随CaO与SiO2质量比的增加而增加,当增加到一定值后又呈下降趋势;样品耐酸性的最大抗折损失率达到了0.304 5,耐碱性能的最大抗折损失率为0.316 54.In order to investigate the influence of CaO/SiO2 mass ratio on the properties of pegmatite porous glass-ceramic,the CAS porous glass-ceramic was chosen as the research object,and the correlative analyses were performed with DTA,XRD,SEM and three-point bending method.The results indicate that with increasing the CaO/SiO2 mass ratio,the length-diameter ratio of parawollastonite crystal decreases gradually.When the CaO/SiO2 mass ratio is 18：60,the volume fraction of parawollastonite crystal reaches the maximum value.With increasing the CaO/SiO2 mass ratio,the main crystal phase keeps stable,and is parawollastonite crystal.The ultimate compressive and flexural strengths of samples increase to a certain value and then decrease with increasing CaO/SiO2 mass ratio.The maximum flexural loss rate in both acid resistance and alkali resistance of samples reaches 0.304 5 and 0.316 54,respectively.

关 键 词：伟晶岩 粉末烧结法 多孔微晶玻璃 副硅灰石 抗压强度 抗折强度 耐酸性 耐碱性 

分 类 号：TQ171[化学工程—玻璃工业]